8687755648 has 128 divisors (see below), whose sum is σ = 20565770400. Its totient is φ = 3603578880.

The previous prime is 8687755619. The next prime is 8687755679. The reversal of 8687755648 is 8465577868.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 8687755648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1626390 + ... + 1631722.

Almost surely, 2^8687755648 is an apocalyptic number.

8687755648 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8687755648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10282885200).

8687755648 is an abundant number, since it is smaller than the sum of its proper divisors (11878014752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8687755648 is a wasteful number, since it uses less digits than its factorization.

8687755648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460 (or 5448 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 64.

The square root of 8687755648 is about 93208.1308041310. The cubic root of 8687755648 is about 2055.7447941344.

The spelling of 8687755648 in words is "eight billion, six hundred eighty-seven million, seven hundred fifty-five thousand, six hundred forty-eight".